xb et 13.10 need help to crack 12s

[falconsmurf]

set up

xb falcon 3700lbs
351ci approx 217rhp 318lbft@5260
2v heads 4v valves
crow 21649 cam 108/234/244
pedders 90/10 front shocks
pedders soft rear shocks
3800rpm stall
3.89gears
funnel web/850 demon
shift kit
275/15/50s 27high
60ft......1.99
330ft.....5.48
660ft.....8.42
1000ft...10.97
et13.10@102.72
i cant hold stall over 2000rpm on line without breaking was thinking of transbrake though may not suit my combo currently redline over finish line,set tis what is just chasing 2 tenths maybee caltracs?carb is big i know also have 150 n20 shot not ran.all ideas welcom.